BEI Electronics LLC
41Patents
1Active
41Granted
38Portfolio score
Filing activity: Jan 18, 1977 → Jul 1, 2016
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4162399A | Optical encoder with fiber optics | Physics | 289 | Expired |
| US4808955A | Moving coil linear actuator with interleaved magnetic circuits | Electricity | 110 | Expired |
| US5345206A | Moving coil actuator utilizing flux-focused interleaved magnetic circuit | Electricity | 72 | Expired |
| US5017772A | Fiber optic probe sensor for measuring target displacement | Physics | 60 | Expired |
| US4678908A | Zero reference generating method and apparatus for optical encoders | Electricity | 49 | Expired |
| US5198616A | Frangible armor piercing incendiary projectile | Mechanical Engineering; Lighting; Heating | 49 | Expired |
| US4504776A | Power saving regulated light emitting diode circuit | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5223667A | Plural piece flechettes affording enhanced penetration | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4068556A | Ammunition identification and firing system having electrical identification means | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US5398498A | Joint construction between components of military projectile and releasable by melting of fusible eutectic helical member | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4167330A | Velocity measuring system | Physics | 22 | Expired |
| US5015836A | Source intensity adjustment apparatus for optical channel | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5759870A | Method of making a surface micro-machined silicon pressure sensor | Performing Operations; Transporting | 19 | Expired |
| US4602155A | Zero reference generating method and apparatus for optical encoders | Physics | 16 | Expired |
| US4362358A | Optical encoder having only one or two fiber optic cables | Electricity | 16 | Expired |
| US5299501A | Frangible armor piercing incendiary projectile | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4203569A | Fin and nozzle unit for a free-flight rocket | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4698608A | Variable force linear actuator | Electricity | 13 | Expired |
| US4577561A | Digital time fuze method and apparatus | Physics | 13 | Expired |
| US5442989A | Frangible armor piercing incendiary projectile | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5942686A | Ratiometric transducer and method | Physics | 12 | Expired |
| US5284059A | Rotation sensor | Physics | 9 | Expired |
| US5677963A | Performance enhancement of closed-ended magnetic circuits by selective removal of material | Electricity | 9 | Expired |
| US4970511A | Method and apparatus for n/(n-x) resolver encoder | Electricity | 9 | Expired |
| US4445112A | Positional encoders with plug-together modules | Electricity | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.